We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-07 · 7 min read · Independent comparison
If you want a wearable, all-day audio companion for calls and music at your desk or on the move, choose iKF R1; if you need a pocket-sized media player that stores your own library and doubles as a sleep-aid device, choose Pmjebe MP3. That's the short version. The longer version matters most if you're shopping for work — because one of these is built to sit on your head while you take calls, and the other is built to sit in your bag and play files. They overlap on almost nothing, which actually makes the decision easier than most head-to-head matchups.
• iKF R1 — biggest strength: On-ear Bluetooth 5.3 headphones with a 60-hour playback rating, multipoint pairing for two devices, a transparent mode, and a companion app for EQ customization. It's a wearable audio device in the classic sense.
• iKF R1 — biggest trade-off: Bluetooth only, so there's no wired fallback and no built-in storage — your music lives on your phone, tablet, or laptop, not on the headphones. It's also on-ear with sound isolation rather than active noise cancellation.
• Pmjebe MP3 — biggest strength: A self-contained player with 32GB of internal memory (expandable to 256GB via microSD), a 2.4-inch touchscreen, lossless format support, FM radio, voice recording, and a bundled sleep-headphone setup with built-in white noise and meditation tracks.
• Pmjebe MP3 — biggest trade-off: It's a player first and a Bluetooth device second. The bundled sleep headphones are the listening hardware; if you want better sound, you'll be pairing your own Bluetooth headphones to it.
• Who each pick is for: iKF R1 for someone who wants one device on their head for calls, music, and quick ambient awareness during the workday. Pmjebe MP3 for someone who wants their music collection off their phone entirely, plus sleep and relaxation audio in one gadget.
The iKF R1 is a retro-styled on-ear wireless headphone. Under the vintage looks it's a straightforward modern Bluetooth 5.3 device: 30 mm dynamic drivers, a 20 Hz–20 kHz frequency range, 32 ohm impedance, and a rated 38 ms latency that matters if you're watching video or taking calls and don't want noticeable lag. Controls are physical buttons plus the iKF app, which is where the EQ presets live — you can pick a preset to match a genre or build and save your own.
The feature that makes it genuinely useful at a desk is multipoint. It pairs to two devices at once, so you can be on a laptop call and still catch a notification tone from your phone without re-pairing anything. Transparent mode pipes ambient sound back in through the microphones, which is the difference between hearing a colleague walk up to your desk and not. The built-in mic handles hands-free calling, so you're not reaching for a separate headset.
Battery is the headline number: up to 60 hours of playback. For a work week, that's the kind of figure that means you charge it on the weekend and forget about it. The 10-meter Bluetooth range is standard and fine for moving between a desk and a nearby room.
Who should buy it: anyone who wants a comfortable, lightweight, over-the-head option for work calls, focused listening, and commuting, and who values long battery life and easy device switching over wired input. Who should skip it: if you need active noise cancellation, wired listening, or onboard storage so you can leave your phone behind, this isn't that product — it's Bluetooth-only with sound isolation, not ANC.
The Pmjebe MP3 (model M1) is a different animal entirely. It's a standalone portable media player with a 2.4-inch capacitive touchscreen, physical buttons for navigation, and 32GB of built-in memory — enough for thousands of tracks — with a microSD slot that takes cards up to 256GB. It supports MP3, WMA, OGG, WAV, APE, FLAC, AAC-LC, and ACELP, so lossless files are on the menu, not just compressed ones. Loading music is drag-and-drop from a computer, which is about as frictionless as file transfer gets.
The battery is a 420 mAh lithium polymer cell rated for up to 50 hours of playback, recharged over USB-C in about two hours. Bluetooth 5.3 lets you pair your own headphones or a speaker, and there's an AUX output that plays nicely with a car stereo. It also packs FM radio, a voice recorder, and a built-in speaker.
Then there's the part that gives it its name: the bundle includes sleep headphones and roughly a hundred built-in tracks of ASMR, white noise, rain, waves, meditation, and sleep-oriented audio. That's the real differentiator. This is a device you buy if you want a dedicated, phone-free audio player — for sleep, for the gym, for a kid's first music player, for the car.
Who should buy it: someone who wants their music library on a separate device, wants sleep and relaxation audio built in, and likes touchscreen-plus-buttons simplicity. Who should skip it: if you want a single pair of headphones to wear for work calls all day, this isn't built for that — the included sleep headphones are designed for lying down, not for a full workday of meetings.
• Best for work calls and meetings → iKF R1. Built-in mic, multipoint pairing for laptop plus phone, and physical controls you can hit without looking.
• Best for all-day battery on your head → iKF R1. The 60-hour playback rating is the number to beat here.
• Best for keeping your music off your phone → Pmjebe MP3. 32GB internal, expandable to 256GB, no streaming or phone required.
• Best for sleep and relaxation audio → Pmjebe MP3. Bundled sleep headphones plus a large built-in library of white noise and meditation tracks.
• Best for lossless file playback → Pmjebe MP3. FLAC, APE, and WAV support with stated bitrate and sample-rate ranges.
• Best for switching between two devices instantly → iKF R1. Dual-device pairing is the whole point of its multipoint design.
• Best for car and speaker use → Pmjebe MP3. Bluetooth 5.3 plus AUX output covers both modern and older car stereos.
• Best for ambient awareness in an open office → iKF R1. Transparent mode lets you hear what's happening around you without removing the headphones.
For work, I'd buy the iKF R1. The multipoint pairing, built-in mic, transparent mode, and 60-hour rating are exactly the four things that make a headset disappear into a workday instead of becoming another gadget to manage. The Pmjebe MP3 is the better pick if your priority is owning your files and having sleep audio in the same box — it's a genuinely different job. But if you're choosing one device to wear while you work, the iKF R1 fits that role more directly. Check the current price on Amazon before you commit, since both are budget-category products and the gap can shift.
Yes — it has a built-in microphone, multipoint pairing for two devices at once, and physical button controls. That combination is what you want for taking calls while a laptop and phone are both connected.
Yes. It ships with sleep headphones and a large set of built-in hypnosis, ASMR, and white-noise tracks, which is the main reason to pick it over a plain MP3 player.
Yes. It supports MP3, WMA, OGG, WAV, APE, FLAC, AAC-LC, and ACELP, with stated requirements of 8KHz–48KHz and 1000Kbps for APE and FLAC files.
The Pmjebe MP3, clearly. It's built around sleep headphones and a built-in library of sleep audio. The iKF R1 is an on-ear headphone designed for listening while awake and moving around.
No. It's Bluetooth-only with no headphone jack, so there's no wired fallback. The Pmjebe MP3, by contrast, is a standalone player that works without any phone or connection at all.
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